To understand how should we represent skill in a resume, we must try to understand the process how a company recruiter is scanning through a resume. Whenever a recruiter is going through a resume, she is looking for the company required skillset matching with your skill set or not. Once skills are matched then recruiter tries to check that the candidate's relevant experience on those skills as required for the particular job opening. Along with this, recruiter tries to check which candidate would be best suited for the job and who could be better candidate to be shortlisted first and to be interviewed first and your resume can help them with the same.
In order to present yourself better through your resume, you must highlight your primary skills along with how much proficient you are in those skills.
When it comes to project experience, one must explain all the relevant project experience and how one has used those skills efficiently and effectively within those projects and what business value was achieved with that work. One should also show any utilities or generic solutions they have provided or created with those skills that not only achieved the project goal but also helped peers within the organization. This would take recruiter into confidence that the profile she is shortlisting would be better fit for the organization.
Summary or about section headline is also important to be written well. Summarize your professional journey in away that clearly specifies profile and work you have done and on which you are looking you next job. Along with that one can also show certification or trainings done on different skills.